Learning objective

Describe the long DNA strands as alternating sugar and phosphate sections with bases attached to the sugars.

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At a glance

5

Flashcards

7

Questions

Topic

Reproduction

Subtopic

DNA structure (biology only)

AQA GCSE BiologyInheritance, variation and evolution

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Short explanation

Describe the long DNA strands as alternating sugar and phosphate sections with bases attached to the sugars.. Within Reproduction, this learning objective sits inside DNA structure (biology only) for AQA Biology 8461. Focus on using ideas such as A, bases, C, G accurately in your explanation. A strong response should define the core idea, describe the relevant biological process, and connect it back to the question wording instead of giving a vague definition. When revising, students should aim to explain the science clearly, include precise biological vocabulary, and show how the process or structure links to the wider topic rather than listing isolated facts.

Key concepts

sugarphosphate

Why it matters

This objective helps connect DNA structure (biology only) to exam-style questions, flashcards, and revision notes for Reproduction.

Common mistakes

1 linked
  • Misidentifying the backbone: Explain that the backbone is a repeating sugar‑phosphate chain; the bases (A, C, G, T) attach to the sugars and face inward to pair with complementary bases on the opposite strand.

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Related learning objectives

Describe The Long Dna Strands As Alternating Sugar And Phosphate Sections With Bases Attached To The Sugars | AQA GCSE Biology Learning Objective | ExamCompanion